Box-blocker



(No Model.) 3 Sheets-Sheet 1. O. GAIL.

BOX BLOGKER.

No. 409,743. Patented Aug. 27, 1889.,

(No Model.) 3 SheetsSheet 2.

G. GALIL-v BOX BLOGKER. No. 409,743. PatentedAug. 27, 1889.

3 Sheets-Sheet 3. C. GAIL.

BOX BLOGKER.

(N0 Mcdel.)

Patented Au 27, 1889,.

JWLZZW UNITED STATES PATENT OFFICE.

OARLGAIL, or CHICAGO, ILLINOIS.

BOX-BLOCKER.

SPECIFICATION forming part of Letters Patent No. 409,743, dated August 27, 1889. Application filed December 26, 1888- Sen'al No. 294,617. (No model.)

To aZZ whom, it may concern:

Be it known that I, CARL GAIL, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Box-Blockers, of which the following is a specification, reference being had therein to the accompanying drawings,

This invention relates to machines for trimming the ends of wooden boxes to be flush, square, and smooth; and it is the object of this my invention to provide such a machine in which the planing-knives are secured in a rotating disk with their cutting-edges slightly projecting and each planing-knife arranged to be automatically oscillated for maintaining its cuttingedge on an angle of forty-five degrees to the vertical line during its segmental course of travel by the box to be planed; and with this object in View my invention consists of the novel devices and combinations of devices, hereinafter described and specifically claimed.

In the accompanying drawings, Figure 1 representsa front elevation, and Fig. 2 an end elevation, of the entire machine; Fig. 3, a rear elevation, and Fig. 4 a section on line at 4 in Fig. 3, of one of the oscillating planing-knife frames.

Corresponding letters of reference in the several figures of the drawings designate like parts.

The frame of the machine is composed of the two sides A A, connected at their ends by transverse braces to and at their middle by a table Z), horizontally extending from frame side A to near frame side A, Where it has a downwardly-extending plate curved at its lower end, where it is secured to a bottom flange of frame side A for the purpose of clearing the plane-disk.

Upon each frame side A and A is secured a standard journal-box B and 3 forshaft 0, having mounted disk D and loose and tight pulleys E and E.

Near its periphery and equal distance apart the disk D has circular openings for inserting therein rings F, to beflush with the front face of the disk D, and provided each with a flange to its rear, by which it is rigidly secured against the rear face of the disk D by screws.

These rings F are bored and counterbored from the front for circular frames G, turned with a shoulder, each snugly to fit into the bore of its ring F, to be flush with the front face thereof, and is pivotally fixed therein by a ring-plate H, overlapping the rearface of ring F, and secured against the rear face of frames G. Each circular frame G is diametrically slotted in a manner to provide an oblique bearingsurface for a plane-knife I, similar to a carpenters plane, which plane-knife is adjustably secured by two clamp-screws '6, passed through slot-ted holes in such planeknife and tapped into disk G. The slotted opening in disk G widening toward the rear provides a free escape for the wood chips and shavings severed from a box while trimming the same. Each ring-plate H is provided With a crank-eye h. A ring 'L is placed over shaft C, and is rigidly secured against a standardbracket M, bolted upon central frame-bracket b to occupy an eccentric position to such shaft C, and strap K is bored to fit upon ring L to rotate thereon. This strap K has a rigid arm m, the eyed end of which is pivotally connected with the crank-eye of one of the planeknife frames G in a manner that such strap K will be rotated with the disk I), and by its eccentric position will impart an oscillating movement to the plane-knife frame G, to which its arm on is connected. This strap K is also provided with three eye-lugs 0, one diametrically opposite to arm m, and the other two intermediate thereof or on a rectangular position therewith. A connecting-rod n pivotally couples each eye-lug o with one of the crank-eyes it of plane-knife frames G in a manner to impart a corresponding oscillating movement to all these planeknife frames during each revolution of disk D. The cutting-edges of the plane-knife frames, as well as the eccentric-ring L, are so adjusted relative to each other that the cutting-edges of these plane-knives by their oscillating movement will maintain an angular position of forty-five degrees to the perpendicular line during their down segmental course of travel at the operating side of the machine, which particular angle has been found by experience to be desirable for smooth and easy cutting.

At the operating side of the machine is provided a shelf or table 0, supported on brackets P, secured to or forming part of frame side A, and this table 0 has a vertical plate R, forming a stationary continuation of the face of disk D, it being longitudinally in line with the front face of such disk D. A box T to be trimmed is placed upon table 0 and is guided by plate R and disk D toward the angle-plate S, adjustably secured upon table 0, to provide a stop or gage, and the side or end of the box thus brought in contact with the front face of disk D will be planed to be smooth, flush, and straight by the knives I.

WVhat- I claim is In a box-blocking machine, the combination, with frame A, table 0, and guide R, of the vertically-rotating disk provided with pivotal plane-knife frames, each having a crank coupled with an eccentric-strap rotating on a stationary eccentric-ring to impart 20 CARL GAIL.

Witnesses:

WILLIAM H. LoTZ, OTTO LUBKERT. 

